Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 35	$ 41	$ 101	$ 97
Other comprehensive income:
Foreign currency translation adjustments	(4)	(11)	0	(8)
Comprehensive income	31	30	101	89
Comprehensive income attributable to noncontrolling interest	0	1	1	1
Comprehensive income attributable to NOW Inc	$ 31	$ 29	$ 100	$ 88